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the sleeping bag debate (52 posts / 8,504 views)
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #1 17 Jan 2023 00:45
0
There is always opinions on sleeping bags fleece lined plain lined and wearing warm clothing in a bag or wearing just thin layer etc etc
so
I would like to share my take and REASONS
it started years ago when I went on a trip to the Highlands in Scotland we decided to stop on route at Fort William Glen Nevis caravan and camp site as my partner wanted to go to the Top of Ben Nevis later that evening their was a very large club ? /group of climbing hikey type people
and they had organised speakers as our caravan was close to the tent field I wandered over and listened in to the survival guys talk he was showing these sleeping bags that people that are in to bondage will like lol
anyway he explained the important thing is if you wear clothes that insulate you from the cold then the sleeping bag cannot get warm !
as your stopping the heat from your body reaching the bag

and so it was important to take off any insulating clothes before getting in the sleeping bag
this then allows your body heat to warm the bag and that in turn will keep you warm its how a sleeping bag is at its most efficient

I wanted to shout out Fleece lined or plain ? but realised all their bags are plain dont think they make fleece lined ones ? do they ?
anyway IMO its all cobblers as yes for the first 2 to 3 mins fleece does feel warmer when you first get in thats all it takes
and I honestly believer PLAIN bags 10 to 15 mins in they get warmer i'm convinced
just saying
sundance sundance
Posts: 6,762
Post #2 17 Jan 2023 07:10
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In reply to Post #1
Whilst I'm sure it's true that wearing insulated clothing is
Going to slow the bag heating. Well it should if the clothing
Is doing its job. However No clothing is holding all the heat. Or we would get
too warm while fishing.

When I get in my bag wearing all my warm clothes that I had on all night I'm
Immediatly toasty. An hour later I'm roasting and the snugpak softie has to come off.

The sleeping bag IS making me warmer even I its only really working as another layer.

But after a while the outside of the thermal clothing is hot and the bag is very warm. So whilst it may have taken a bit longer to warm the bag I was toasty anyway in my clothing, and also have the benefit
Of being dressed already for when a fish bites.

carpstar40 carpstar40
Posts: 3,706
Post #3 17 Jan 2023 08:03
0
After many years and many hours in many different bags I'm finally happy with my comfort level in the colder months now modern tec has provided me with the solution I no longer take the hot water bottle with me, I appreciate we all have different views on what suits one may not suit another or preferences but to continue the colder darker months fishing overnight as I'm getting older I was in my Nash all season SS3 Saturday night for 8 hours when it dropped to just below freezing, I had the Nash electric blanket plugged in to my RM powerpac most of the night from just before getting in the bag, I had it set on the lowest setting "green" hardly used any battery on the RM still all four lights lit in the morning after 8 hours from being switched on , bagged my first carp of the year 28lb (old fish a repeat from 4 years ago at 33lb) I slept just in my thermals and Aqua socks when I would normally jump in with that and joggers and a hoody, I had to strip off to the thermals as I was that warm, a sight to behold at 1am in the morning when I had the take so a good job I was on my own, I was fishing from the hide so woke up Sunday morning no wet bivvy to pack only net, sling and mat then away and home by 10am to a cooked breakfast by the bread knife.
NickGordon NickGordon
Posts: 3,121
Post #4 17 Jan 2023 12:09
0
I'm a cold weather angler, and have been for years.
My first winter bag was a Polar model that I got from a camping shop, purple it was, previous to that I had a thin summer bag that in winter would zip into a larger 'mountain' bag.
When that died I bought a Coleman Polar -12 sleeping bag.
I'm on probably the 4th winter bag now, and the least warmest in winter was a Wychwood Morpheus. I was forever getting cold feet, once the hot water bottle had cooled down, my feet would freeze.

I'm now using a Rod Hutchinson All Season bag with an Ultimate Cover and last night when I checked at about 7pm it was -4⁰C.
I was warm and toastie in the bag.
Clothing wise, combat trousers, socks, t-shirt and Norgie.
I did sit up with my fleece jacket on while reading a book, but as soon as I finished reading took it off and snuggled down.

The RH bag has a fleece upper, and smooth base.


Now as a point of note, powerpacks do not particularly like winter, and will often slow down charging or supplying power in colder temperatures


Stickysticky
Posts: 481
Post #5 17 Jan 2023 20:54
0
In reply to Post #4
I fished last night with a Nash 5 season bed chair wide boy sleep system thing. I use a hot water bottle too but soon found I was too warm!

I use a self inflating mattress too and I'm convinced that extra layer underneath helps stop the cold rising up from below...
g4fne g4fne
Posts: 15,110
Post #6 17 Jan 2023 21:15
0
Its a subjective debate based on how much you feel the cold i guess .... but ive never bought into the "less clothes is better" theory in a sleeping bag for keeping warm .... Whenever i see documentaries on extreme cold conditions (Killamanjero etc) they wear multiple layers in bed
frothey frothey
Posts: 3,575
Post #7 17 Jan 2023 21:59
0
In reply to Post #6
I've switched to a Trakker 365 this year and most nights have been in shorts and t-shirt. One thing I have done is put a layer of the insulation stuff Hello Fresh deliveries are wrapped in on top of the mattress as extra insulation. Seems to work well.
frothey frothey
Posts: 3,575
Post #8 17 Jan 2023 22:00
0
In reply to Post #6
Yeah, but like you said extreme cold. We don't often fish in minus double figures!
Beyonce
Posts: 1,711
Post #9 17 Jan 2023 22:06
0
I just wear a hoody and joggers in bed with Snugpak thermals if it's mega cold. Fish year round and I'm fine through the winter in a Nash SS3 5 season. If I get a run in on a winter night and need to get in the boat to land it I want more on than a pair of underpants

g4fne g4fne
Posts: 15,110
Post #10 17 Jan 2023 22:35
0
In reply to Post #8
no, absolutely ... but some people do feel very cold still, even if we dont experience extreme cold
500kg
Posts: 157
Post #11 17 Jan 2023 22:37
0
In reply to Post #6
I initially thought the same. However, I suspect the main reason for that is because at extremely low temperatures, at high altitudes, you'd probably be frozen solid (literally in some cases) before you can get all your layers off and get into a sleeping bag - there are sleeping bags available which are rated to -50 to -60 degrees C after all. The only reason I can see for sleeping in the buff would be warmer than whilst wearing layers is if those layers had a degree of moisture which caused the synthetic insulation to become moistened which would markedly affect the thermal qualities.

I do not buy into the thought that wearing layers stops body heat heating the sleeping bag. That doesn't make sense and goes against the basic premise of a layering system which has historically allowed humans to survive for extended periods in the coldest temperatures on earth - the sleeping, in this case, being analogous to a down suit.
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #12 17 Jan 2023 22:50
0
In summer I sleep in shorts a tee shirt in winter obviously a bit different in sub zero icy cold winds

if you read post one ?
nobody said anything about sleeping in the buff as some put it
its says dont get in the bag wearing clothes that insulate you from the cold as the sleeping bag cannot get warm ! jogging bottoms etc wont fall in that category

makes perfect sense to me and it has worked for me for qute a few years in PROPER cold while fishing in europe
one of my previous bags was a trakker 365 thats was way to warm unless it was really cold and so heavy and bulky
500kg
Posts: 157
Post #13 17 Jan 2023 22:53
0
In reply to Post #12
What do you mean insulates you from the cold? You seem to be suggesting clothes which do not allow heat to pass through them, hence not allowing for the transfer of heat from one side of the garment into the air between the garment and the sleeping bag?
lurchy lurchy
Posts: 1,205
Post #14 17 Jan 2023 22:58
0
In reply to Post #12
Joggers and hoody in the bag. Always take off any bib n brace & coat.. few weeks back all tucked in the old pertex bag it froze over on me, never had a clue till I opened the door,
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #15 17 Jan 2023 22:59
0
In reply to Post #13
read post one please mate
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